Hokulani Observatory first appeared in the {{chap|Sun, Moon, Ultra Sun & Ultra Moon}}. A group of [[Ultra Beast]]s were summoned from their homeworlds at [[Po Town]] but eventually broke free, allowing them to cause havoc and destruction on the various locations on Ula'ula Island. [[Sophocles]] and [[Molayne]] used the observatory as a shelter to house any innocent civilians that were caught up in the chaos caused by the rampaging beasts. Due to the possibility that the observatory could also be attacked eventually, Sophocles decided to use an invention designed to lure Totem Pokémon to guide the Ultra Beasts away.